Power transmission control device, power transmitting device, non-contact power transmission system, electronic instrument, and power transmission control method

摘要

A power transmission control device provided in a power transmitting device of a non-contact power transmission system includes a power-transmitting-side control circuit that controls power transmission to a power receiving device, the power-transmitting-side control circuit causing the power transmitting device to perform intermittent temporary power transmission, detecting a response from the power receiving device that has received the power due to the temporary power transmission to automatically detect installation of a power-receiving-side instrument that includes the power receiving device in an area in which power transmitted via non-contact power transmission can be received, and causing the power transmitting device to perform continuous normal power transmission to the power receiving device when the installation of the power-receiving-side instrument has been detected. A foreign object detection process may also be performed in combination.

主权项

1. A power transmission control device provided in a power transmitting device of a non-contact power transmission system, the non-contact power transmission system performing non-contact power transmission from the power transmitting device to a power receiving device via a primary coil and a secondary coil that are electromagnetically coupled, the power transmission control device comprising:
a power-transmitting-side control circuit that controls power transmission to the power receiving device, the power-transmitting-side control circuit causing the power transmitting device to perform intermittent temporary power transmission, the power receiving device that has received the temporary power transmission performing position detection that checks whether or not a power-receiving-side instrument that includes the power receiving device is placed at an appropriate position, the power receiving device transmitting an ID authentication frame to the power transmitting device when the power-receiving-side instrument is placed at the appropriate position, the power-transmitting-side control circuit performing an ID authentication process based on the ID authentication frame and transmitting a permission frame to the power receiving device when the ID authentication frame has been detected within a given period of time after the intermittent temporary power transmission and the ID authentication has succeeded, the power-transmitting-side control circuit causing the power transmitting device to continuously perform the intermittent temporary power transmission when the ID authentication frame has not been detected within the given period of time after the intermittent temporary power transmission, the power receiving device checking the permission frame and transmitting a start frame to the power transmitting device to start continuous normal power transmission, the power-transmitting-side control circuit causing the power transmitting device to perform the continuous normal power transmission to the power receiving device when the start frame has been detected.